You won't find any byproducts in Blue Health Bars Baked with Chicken Liver from Blue Buffalo, just oatmeal, ground barley, flaxseed, fiber, and, best of all, chicken liver! Crunchy treats clean his teeth with every bite, so even if he forgot to brush his teeth this morning no one will notice. And the whole grains included provide complex carbohydrates needed for a nice energy boost when training sessions are running long. The best class of ingredients for the best class of friend. One more, please!